body{
	margin: 0;
	padding: 0;
}
/* 设置上方长条的样式 */
.c1{
	background: url(../images/Logo.gif);
	background-color: dodgerblue;
	width: 100%;
	height: 12.4%;
	position: absolute;
	background-repeat: no-repeat;
}
/* 设置一个可以放字体并且可以遮挡左边质量....系统字样的长条的样式 */
.c2{
	background-color: dodgerblue; 
	width: 71%;
	height:100%;
	margin-left: 6%;
	float: left;
	
}
/* 下拉菜单 */
/*左侧导航栏顶部样式*/
/*鼠标经过导航栏二级列表出现*/
#nav, #nav ul {
padding: 0;
margin: 0;
list-style: none;
}
#nav li {

width: 200px;
height:40px;
background:url(../images/columns.gif);
color: #2D486C;
background-repeat: no-repeat;
text-align: center;
}
#nav a:link, #nav a:visited {
display: block;
text-decoration: none;

color:red;
}
#nav ul {
display: none;
position: absolute;
padding-top: 10px; /*子导航距离拉出来后距离自导航的距离*/
}
#nav ul li {


font-size: 100%;
margin: 0;
margin-bottom: 0;
padding: 0;
}
/*鼠标经过导航栏二级列表出现*/
#nav li:hover ul {
display: block;
}